膜富集-可见漫反射光谱法测定池塘水和维生素B12药片中痕量钴
Determination of Trace Amount of Cobalt in Pond Water and Vitamin B12 Tablets by Visible Diffuse Reflectance Spectrometry with Membrane Filtration Enrichment
摘 要
1-(2-吡啶偶氮)-2-萘酚与钴离子生成暗绿色的络合物,反应后将其过滤到膜上,测得膜表面漫反射光谱,据此提出了膜富集-可见漫反射光谱法测定池塘水和维生素B12药片中痕量钴的方法.钴的质量浓度在0.2~3.0 μg·L-1和3.0~10.0 μg·L-1范围内与其吸光度呈线性关系,检出限(3s/k)为0.093 μg·L-1.方法用于池塘水和维生素B12药片的分析,加标回收率在96.7%~105%之间,测定值的相对标准偏差在1.4%~2.9%之间.
钴
膜富集
池塘水
维生素B12药片
Visible diffuse reflectance spectrometry
Cobalt
Membrane filtration enrichment
Pond water
Vitamin B12 tablets
Abstract
Co-PAN complex was formed by the reaction of 1-(2-Pyridylazo)-2-naphthol and cobalt(Ⅱ) ion. The mixture was filtered with membrane,then visible diffuse reflectance spectra of the membrane filters were acquired. Based on the fact,a method for the determination of trace amount of cobalt in pond water and vitamin B12 tablets by visible diffuse reflectance spectrometry with membrane filtration enrichment was proposed. Linear relationship between values of absorbance and mass concentration of cobalt was obtained in the ranges of 0.2-3.0 μg·L-1 and 3.0-10.0 μg·L-1,with detection limit (3s/k) of 0.093 μg·L-1. The proposed method was applied to the analysis of samples of pond water and vitamin B12 tablets,giving values of recovery and RSD′s in the ranges of 96.7%-105% and 1.4%-2.9%,respectively.
中图分类号 O657.3
所属栏目 工作简报
基金项目 上海市科学技术委员会项目(13142201200)
收稿日期 2014/3/29
修改稿日期
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备注朱碧琳(1989-),女,安徽亳州人,硕士研究生,主要从事紫外可见漫反射光谱测定痕量金属离子的研究.
引用该论文: ZHU Bi-lin,HU Hui-lian,IQBAL Jibran,WANG Lei,ZHANG Xiao-fang,ZHANG Lei,YANG Wei-hong,WU Ting,DU Yi-ping. Determination of Trace Amount of Cobalt in Pond Water and Vitamin B12 Tablets by Visible Diffuse Reflectance Spectrometry with Membrane Filtration Enrichment[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2015, 51(2): 172～175
朱碧琳,胡慧廉,IQBAL Jibran,王蕾,张晓芳,张磊,杨伟宏,吴婷,杜一平. 膜富集-可见漫反射光谱法测定池塘水和维生素B12药片中痕量钴[J]. 理化检验－化学分册, 2015, 51(2): 172～175
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参考文献
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【2】TSALEV D,ZAPRIANOV Z. Atomic absorption in occupational and environmental health practice,analytical aspects and health significance[M]. Boca Raton FL:CRC Press,1983.
【3】BRATTER P,SCHRAMEL P. Trace element analytical chemistry in medicine and biology[M]. Berlin:Walter de Gruyter,1980.
【4】侯晋.高压消解-火焰原子吸收光谱法测定大米中痕量铅铬镉镍和钴[J].理化检验-化学分册,2003,39(1):37-41.
【5】BAZZI A,NRIAGU J O,LINDER A M,et al. Determination of toxic and essential elements in children′s blood with inductively coupled plasma-mass spectrometry[J]. Journal of Environmental Monitoring,2008,10:1226-1232.
【6】IOANNIDOU M,ZACHARIADIS G,ANTHEMIDIS A,et al. Direct determination of toxic trace metals in honey and sugars using inductively coupled plasma atomic emission spectrometry[J]. Talanta,2005,65:92-97.
【7】CIFTCI H. Determination of cobalt in some plants by reversed-phase high performance liquid chromatography[J]. Asian Journal of Chemistry,2008,20(4):3025-3032.
【8】孙家娟,白育伟,刘彬,等.1-(5-硝基-2-吡啶偶氮)-2,7-萘二酚吸光光度法测定微量钴[J].理化检验-化学分册,2001,37(9):394-396.
【9】HILL A A,LIPERT R J,FRITZ J S,et al. A rapid,simple method for determining formaldehyde in drinking water using colorimetric-solid phase extraction[J]. Talanta,2009,77:1405-1408.
【10】IQBAL J,YIN Chang-hai,GENG Jin-pei,et al. Ultra-sensitive spectrophotometric determination of nickel after complexation and membrane filtration[J]. Microchim Acta,2012,177:195-200.
【11】GAZDA D B,FRITZ J S,PORTER M D,et al. Determination of nickel(Ⅱ) as the nickel dimethylglyoxime complex using colorimetric solid phase extraction[J]. Analytica Chimica Acta,2004,76:4881-4887.
【12】TAKAHASHI Y,KASAI H,NAKANISHI H,et al. Test strips for heavy-metal ions fabricated from nanosized dye compounds[J]. Angewandte Chemie,2006,45:913-916.
【13】YIN Chang-hai,IQBAL J,HU Hui-lian,et al. Sensitive determination of trace mercury by UV-visible diffuse reflectance spectroscopy after complexation and membrane filtration-enrichment[J]. Journal of Hazardous Materials,2012,233/234:207-212.
【14】DOLGIN B,BULATOV V,JAPAROV J,et al. Quantification of trace metals in water using complexation and filter concentration[J]. Talanta,2010,81:1482-1488.
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